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最近需要3D图形化显示点云功能，网上搜了一下发现有PCL点云库的例程。但是发现这个例程是一次性加载完所有点云然后再显示的。感觉这个不太符合项目上的需求，项目上希望能够实时的像流量计一样动态显示点云。所以就把代码改动了一下，发现效果还可以。而且网上还没有类似的例子，所以就分享下希望能帮到有需要的同学。
运行效果:
完整代码:
#include <iostream>
#include <vector>
#include <ctime>
#include <pcl/point_cloud.h>
#include <pcl/octree/octree.h>
#include <boost/thread/thread.hpp>
#include <pcl/visualization/pcl_visualizer.h>#include <stdio.h>
#include <lasreader.hpp>
#include <laswriter.hpp>
#include <iostream>#include <Windows.h>
#pragma comment(lib,"winmm.lib")using namespace std;pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
LASreader* lasreader = nullptr;//void CALLBACK CallBackFunc(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
//{
// printf("CallBackFunc\n");
//}void ThreadUser() { //线程入口cout << "thread start." << endl;// 创建点云数据int i = 0;while (lasreader->read_point()) {if (!(i % 10)) {pcl::PointXYZ point;point.x = lasreader->point.get_x();point.y = lasreader->point.get_y();point.z = lasreader->point.get_z();cloud->push_back(point);}i++;}cout << "thread end." << endl;
}int main(int argc, char** argv)
{LASreadOpener lasreadopener;std::string file_name = "E:\\xyz.laz";lasreader = lasreadopener.open(file_name.c_str());if (lasreader == nullptr) {std::cerr << "File could not be opened." << std::endl;return -1;}//定时加载点云//timeSetEvent(1000, 1, CallBackFunc, (DWORD)NULL, TIME_PERIODIC);//创建子线程HANDLE h; //线程句柄h = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadUser, NULL, 1, 0); //创建子线程// 初始化点云可视化对象std::shared_ptr<pcl::visualization::PCLVisualizer>viewer(new pcl::visualization::PCLVisualizer("显示点云"));viewer->setBackgroundColor(255, 255, 255); //设置背景颜色为白色// 对点云着色可视化设置颜色pcl::visualization::PointCloudColorHandlerCustom<pcl::PointXYZ>target_color(cloud, 0, 0, 0);ResumeThread(h); //启动子线程// 等待直到可视化窗口关闭int cloudID = 0;while (!viewer->wasStopped()){if (cloud->size()) {viewer->addPointCloud<pcl::PointXYZ>(cloud, target_color, to_string(cloudID));//viewer->setPointCloudRenderingProperties(pcl::visualization::PCL_VISUALIZER_POINT_SIZE, 1, to_string(cloudID));printf("added point sum:%d cloudId:%d\n", cloud->points.size(), cloudID);cloud->clear();cloudID++;}viewer->spinOnce(100);// 等待100毫秒后再次检查停止条件，并刷新界面//viewer->removePointCloud(to_string(cloudID - 1));}CloseHandle(h);delete lasreader; // 释放资源return (0);
}laslib配置:
参考例子:
超详细保姆级PCL1.14.0 安装配置流程